Belt-gearing for roller-mills



(No Model.) 'Z-Sheets-Sheet l.

J. M. SCHUTZ. BELT GLARING FOR ROLLER MILLS.

No. 337,444. Patented Mar. 9, 1886.

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(No Model.) 2 Sheets-Sheet 2.

J. M. SCHUTZ. BELT GEARING POR ROLLER MILLS.

Patented Mar. 9, 1886.

N. PETERS. PhoiM-iwgmphsr. Walhinglon,

Sratrss l Ntra JOSEPH M. SCHUTZ, OF MINNEAPOLIS, MINNESOTA.

BELT-GEARING FOR ROLLERnlVllLLS.

SPECIFICATION forming part of Letters Patent No. 337,444, dated March 9, 1886.

Serial No. 146,506. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH MARTIN SCHUTZ, a citizen of the United States, and a resident of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Belt-Gearing for Roller-Mills, of which the following is a specication.

Figure 1 is aside elevation of the roller-mill complete. Fig. 2 is a sectional elevation showing the belt-gearing at right angles to its position in Fig. l. Fig. 3 is ahorizontal section of the rnill directly above theidle-pulley-supporting device, showingthe same in plan. Fig. 4. is a vertical section of a portion of the mill in a plane indicated by the line u o in Fig. 3.

A A2 are the side fraxnes,between which the rolls are journaled, and connected together by the tie beams or bolts a,in the ordinary manner.

B B2 B3 are three grinding-rolls placed in line perpendicularly between the sides A A2, and with their journals b b2 b3 passing out through the said sides, as shown. The center roll is held in a fixed relation to the frame A A2 by being journaled in fixed bearings on the frame, while the upper and lower rolls are made adjustable with relation to the center roll by means of levers D D2, in which their journals b b5 are arranged to be held by caps.

On the ends of the shafts of the rol-1s B B3 belt-pulleys V V2 are secured, and on the corresponding end of the shaft of the center roll, B2, a larger pulley,V5, is secured, the latter overlapping the outer edges of the pulleys V V2, as shown. rIhe'sizes of these pulleys may be varied to suit the circumstances, it being necessary to the perfect action ofthe apparatus that the upper and lower rolls should be revolved at a greater speed than the center roll; hence the relative sizes between the pulleys V V2 and the pulley V3 will be made to secure the proper variations of speed.

In practice I have found the relative sizes shown in the drawings to be about the proper ones for ordinary work, giving the upper and lower rolls a speed of about two and a half revolutions to one of the center roll; or, in other words, if the center roll makes two hundred` and eighty revolutions per minute, the upper and lower rollswould make seven hundred revolutions per minute.

from thepulley V3 to the pulley V, as follows: The main driving-shaft will be located below the line of support on which the rollerframe A A2 stands, and will be provided with a belt-pulley in line below the pulleys V V2 The pulley and the main shaft are not shown in the drawings, the belt being shown broken oft' at t" i and represented as just coming up from the pulley below. The belt rst passes up at W and over the pulley V, thence down at V2 and around the idler Vt, which will be set at an angle, so as to lead the belt at W5 up over the large pulley V5, and thence down at W4 to and around theother idler, V5, which will be so set as to lead the belt, as at V T5, up over the pulley V2, and from thence, as at W5, back to the pulley beneath the floor. By this `simple means only one belt is required to revolve all three of the rollers B B2 B1, and in the proper directions and at the required speed.

By changing the sizes of the pulleys V V2 V3 any desired variation of speed may be obtained.

The idlers77 V1 V5 are supported by yokefra'mes V6 V1, the latter being in turn secured by horizontal disks V5V1to similar disks, V10 V11, on hangers or brackets VI2 V111. The disks are slotted and perforated, so that the yokeframes may be adj usted around the center of the disks, while the brackets V12V15 are also adjustable upon the side A, so that the idlers may be adjusted to properly lead 7 the belt from one pulley to the other.

The brackets V12 V11 are formed with rightangled surfaces V1", to fit into the corners of the side A upon properly-prepared upright surfaces V15, as shown. The edges ofthe frame A are pierced with upright slots t', through which the brackets are secured to the side frame by bolts t2, While the other portions of the parts V11 of the brackets are similarly secured to the main part of the frame A by the bolts of the lower tie-bars, a, as shown, the slots in this case being in the bracket instead of in the frame.

V11 V1T are rods j ournaled through the rim of the frame A', and also through the bridge-tree IOO for adjusting the rolls, in order that the main parts ofthe mill may loe shown complete, and I reserve to myself the making of such mechanism the subject-matter of another application for Letters Patent.

Having thus described my invention, what I claim as new is 1. In a rollenmill, the combination of roll B, provided with pulley V, roll B, provided with pulley V, roll B3, provided with pulley V2, said rolls being arranged in line perpendieularly and supported in a suitable frame-4 work, singularly-set idlers V V5, and a belt adapted to pass around all of said pulleys, substantially as and for the purpose specified.

2. In a roller-mill, the combination of roll B, provided with pulley V', roll B2, provided with pulleyV, roll lprovided with pulley V2, said rollsbeing arranged in line perpendicularly and supported in a suitable frame-work, idlers VL V5, yoke-frames VSV?, disks'V8V9, brackets Vu V", means for adj ustiug said yokeframes upon said brackets, and means for adjustng said brackets upon said supporting frame-work, substantially as set forth.

In testimony thereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOSEPH M. SCHUTZ.

Witnesses:

W. I-I. DONAHUE, C. N. VooDwAnn. 

